Issue 1, 2018

New insight into an efficient visible light-driven photocatalytic organic transformation over CdS/TiO2 photocatalysts

Abstract

Selective transformation of organics by visible-light-driven photocatalysis has been considered as a green and efficient strategy for the synthesis of fine chemicals. Herein, we fabricated mesoporous structured TiO2 with CdS nanoparticles successfully by a photodeposition method. The photocatalytic selective oxidation of benzyl alcohols and reduction of 4-nitroaniline were demonstrated over the as-prepared samples under visible-light irradiation. The CdS-decorated TiO2 with the photodeposition time of 90 min exhibited highest activity, which was higher than that of the commercial CdS, bare TiO2, CdS/P25, and CdS/SiO2. Further experimental results indicated that the higher performance was attributed to the moderate deposition of CdS forming a closely connected heterojunction with TiO2, which promoted the separation of photogenerated electrons and holes. Based on the results of active species detection, possible mechanisms for photocatalytic selective oxidation of benzyl alcohol and reduction of 4-nitroaniline were proposed. Our study may provide guidance for selective transformation of organics via construction of heterojunction photocatalysts.

Graphical abstract: New insight into an efficient visible light-driven photocatalytic organic transformation over CdS/TiO2 photocatalysts

Supplementary files

Article information

Article type
Paper
Submitted
05 Jul 2017
Accepted
10 Nov 2017
First published
13 Nov 2017

Photochem. Photobiol. Sci., 2018,17, 51-59

New insight into an efficient visible light-driven photocatalytic organic transformation over CdS/TiO2 photocatalysts

Z. Hu, H. Quan, Z. Chen, Y. Shao and D. Li, Photochem. Photobiol. Sci., 2018, 17, 51 DOI: 10.1039/C7PP00256D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements